Abstract：
The bioavailability, small size and direct absorption in the blood, make nanoparticles (NPs) a remarkable feed additive in the aquaculture industry. Therefore, dietary iron oxide nanoparticles (Fe2 O3 -NPs) were used to examine their effects on growth, nutrient absorption, body composition and blood indices in Cyprinus carpio (Common carp) fingerlings. Healthy C. carpio fingerlings (n = 270) were fed with six canola meal based experimental diets (D1-control, D2, D3, D4, D5, D6) supplemented with 0, 10, 20, 30, 40 and 50 mg/kg Fe2 O3 -NPs respectively. A total of 15 fingerlings (average initial weight 5.51 ± 0.04 g/fish) were kept in triplicates for 70 days. The results indicated that maximum growth performance, apparent digestibility coefficient, body composition and haematological parameters were observed in 40 mg/kg Fe2 O3 -NPs supplementation. All the experimental diets were significantly improved (p < 0.05) in all the above parameters than control diet. In the present research, the recommended dosage of Fe2 O3 -NPs as dietary supplement is 40 mg/kg for improving the growth, nutrient absorption, body composition and haematological indices in C. carpio fingerlings. Hence, this study demonstrates the potential of NPs to improve the health of fish.
摘要：
生物利用度，小体积和直接吸收在血液中，使纳米颗粒（NPs）成为水产养殖业中引人注目的饲料添加剂。因此,膳食氧化铁纳米颗粒（Fe2O3-NPs）用于检查它们对生长的影响，营养吸收，鲤鱼（鲤鱼）鱼种的身体成分和血液指数。健康的C.carpio鱼种（n=270）饲喂六种基于卡诺拉粉的实验饮食（D1对照，D2，D3，D4，D5，D6）分别补充了0、10、20、30、40和50mg/kg的Fe2O3-NPs。将总共15个鱼种(平均初始重量5.51±0.04g/鱼)一式三份保持70天。结果表明，最大的生长性能，表观消化率系数，在补充40mg/kgFe2O3-NPs时观察到身体成分和血液学参数。所有实验饮食在所有上述参数方面均比对照饮食显著改善(p<0.05)。在目前的研究中,Fe2O3-NPs作为膳食补充剂的推荐剂量为40mg/kg，以改善生长，营养吸收，C.carpio鱼种的身体成分和血液学指标。因此，这项研究证明了NPs改善鱼类健康的潜力。
